This circuit provides a reference voltage for calibration. He uses a diode in a small thermal chamber. We found this circuit in an old american documentation.
In this circuit, the relay remains closed by activating a lamp, for a time that depends on the...
We found this circuit in documentation from the 90s. The circuit has a latch. The power supply must...
This circuit indicates the logical level of a CMOS circuit, extracting the power from the circuit...